Must vs Have To / Has To

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See Subject Exercises:

Must vs Have/Has To Exercise 1
Must vs Have To Exercise 2
Mustn't vs Don't Have to
Must/Mustn't vs Needn't vs Have to

Examples Sentences

Teacher : You must listen to me carefully.
Father : You must stop smoking.

You have to put on uniform at school.
She has to buy new dictionary for school.
You have to give your report by 5 p.m. tomorrow.
They have to wake up early in the morning.

MUST

Affirmative Form	Subject + must + verb + complement
	You must come home before 8 o'clock.
Negative Form	Subject + mustn't + verb + complement
	You mustn't come home before 8 o'clock.
Question Form	Must + subject + verb + complement ?
	Must you come home before 8 o'clock?
Negative Question Form	Mustn't + subject + verb + complement ?
	Mustn't you come home before 8 o'clock?

HAVE TO / HAS TO

Note:

When we say he doesn't have to take his medicine, we mean that he is not obligated to take his medicine. (Lack of necessity)

We say he mustn't take his medicine to give it a negative obligation meaning.

Note:

Must is only used in present and future meanings. Have to can be used in any tenses.

Note:

Must also has a probability meaning.

He missed the class for the first time, he must be sick.

Similar Subjects:

Needn't Have Done (Verb3) vs Didn't Need To
Auxiliary Verbs
Modal Verbs Chart ↑▲▲▲▲▲▲▲↑